Kovits



(No Model.)

M. H. MOSKOVITS.

GRATE BAR.

Patented May 1,1888;

r w n e m I UNiTE STATES PATENT rricn.

MAXIMILIAN H. nosxovirs, or KANSAS CITY, MISSOURI, AssIeNoR or ONE-HALFTO GAESARINA MOSKOVITS, or SAME PLACE.

G RATE-BAR.

SPECIFICATION forming part of Letters Patent No. 382,104, dated May 1,1888.

' Application filed November 29, 1887. Serial No. 256,448. (No model.)

To aZZ whom it may concern.-

Be it known that I, MAXIMILIAN H. Mos- KoVITs, of Kansas City, Jacksoncounty, Missouri, have invented a certain new and useful Improvement inGrate-Bars, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

This invention relates to grate bars whereof a plurality are required tomake up a grate; and it may be said to consist in the peculiarconstruction of the bar and the arrangement of bars, hereinafter setforth, and pointed out in the claims.

In the drawings, which illustrate the manner of carrying out myinvention, Figure l is a perspective view of one of my improvedgrate-bars. Fig. 2 is a plan view of several bars properly arranged withrelation to each other to form a grate; and Fig. 3 is a sectional detailview in perspective, the section being taken through one of the barsshown in Fig. 2 on line a m.

Thebar consists of a lower longitudinal web, A, of sufficient strengthto support the weight that may be imposed upon it, and an upper web, B,which extends from end to end of the bar in a corrugated or zigzagcourse, as shown. In this way lateral projections 22 and spaces orpassages 12 b are formed in said upper web, the spaces or passages beingof course located within the projections and upon opposite sides of thelongitudinal supporting-web A.

The bar is provided with the usual supporting-lugs, (J, at its ends, andone side of said lugs is provided with a lateral projection, m, whilethe opposite side is provided with a corresponding depression or recess,1, whereby several bars of a series required to make up a grate will belocked together and held securely in position during use.

It will be observed that the upper web, B, is somewhat \l-shaped incross section, as shown more clearly in Fig. 3, and that it is attachedto the upper edge 01 web A by a comparatively small amount of metal, thelower portions of projections b being cut away so as to form transverseholes d, thereby leaving the connecting portions 6 between the two websquite thin and light and allowing the air to circulate freely throughthe upper part of the grate by passing through the open ings d. Thisfeature is particularly valuable in preventing the grate from becomingburned out, besides rendering it much lighter.

It will thus be seen that the gratesurface is made up of a series ofintermeshing zigzag webs, the lower web or rib acting only to supportsaid grate -surface, and therefore said lower webs may be locatedcomparatively far apart, remaining always cool. The air passes below andon both sides of both webs, keeping them always quite cool, and preventstheir burning or warping. The openings b for the passage of air betweenthe bars are so arranged that, although each one is small, upon thewhole a larger percentage of the gratesurface is free for the passage ofair than is found in a grate of ordinary construction, and the air sopassing through said bars is divided into thin sheets and results in avery thorough combustion of the fuel.

The two webs taken together make a strong support for the fuel, so thateven in bars of extra length the details can be kept comparatively lightand the cost small.

It will be seen that owing to the small amount of metal used inconnecting the upper rib, B, to the lower rib, A, although said partsare cast integral, said upper web can expand and contract withoutmaterially affecting the lower web.

Transverse lugs a are formed upon the sides of lower web, A, for thepurpose of holding said web in relative position. It will thus be seenthat the bar is provided with an upper zigzag web, B, mounted upon orformed integral with a lower supporting-web, A, transverse holes d beingformed in the bar at the point of union.

The zigzag web B is mounted upon the supporting-web A in such a mannerthat the latter extends transversely through the central portion ofthe'sides of the triangles formed by the transverse serrations b in theweb B. B this construction upward-draft passages 11" b are formedthrough the web B and upon opposite sides of the supporting-webA,whereby the circulation is also materially increased, transverseprojections b being formed upon said upper web, and vertical air-passageb being located between said projections, the

projections on one bar of the series making up a grate intermeshing withthose of the one next adjoining it.

Having thus described my invention, what I claim is 1. In a grate-bar, alongitudinal supportingweb,A, provided with a transverse zigzag web, B,provided with openings b b upon opposite sides of the supporting-web,for the purpose set forth.

2. In a grate-bar, a zigzag web mounted upon a straight supporting-webextending transversely across the serrations of the zigzag web, thelatter being provided with openings b 1) upon opposite sides of thesupportingweb, substantially as described.

3. The combination, in a grate-bar, of a straight longitudinalsupporting-web, A, at

its under side, a zigzag upper web, 13, supported upon said straight webby means of 2c In testimony whereof I affix my signature in c presenceof two witnesses.

MAXIMILIAN H. MOSKOVITS.

WVitnesses:

S. S. MoREHoUsE, F. G. FISCHER.

